Select the option that is related to third number cluster in the same way second number cluster is related to first number cluster.
14: 168 :: 21: ?
The logic followed here is as follows. Second number = First number X (First number - 2) In 14: 168, = 14 X (14 - 2) = 14 X 12 = 168 Similarly, in (21: ?) = 21 X (21 - 2) = 21 X 19 = 399.
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